【英文标准名称】: Portable hand-held forestry machines - A-weighted emission sound pressure levels at the operator's station - Comparative data in 2002 【原文标准名称】: 便携手持式林业用机械.驾驶室可测量的排放声压级.2002年比对数据 【标准号】: ISO/TR 22520-2005 【标准状态】: 现行 【国别】: 国际 【发布日期】: 2005-01 【实施或试行日期】: 【发布单位】: 国际标准化组织(ISO)【起草单位】: ISO/TC 23【标准类型】: ()【标准水平】: ()【中文主题词】: 【英文主题词】: 【摘要】: ISO/TR 22520 provides comparative data, obtained from various manufacturers and other official sources, for the year 2002, on the A-weighted emission sound pressure levels of portable hand-held forestry machinery. It is applicable to chain saws (for which the existing emission sound pressure levels were for the full range of engine sizes) and to brush-cutters and grass-trimmers. International Standards ISO 11681-1, ISO 11681-2 and ISO 11806 require that these machines be designed to generate noise levels as low as practicable, based on the existing noise emission data, and ISO/TR 22520 is intended to assist in determining compliance with that requirement.【中国标准分类号】: Z32;B96【国际标准分类号】: 65_060_80;17_140_20【页数】: 9P;A4【正文语种】: 英语